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Finding the Third Proportional to 279,542 and 372,439

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Solution

The third proportional to 279,542 and 372,439 is: 496,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,542 : 372,439 = 372,439 : x
  2. Step 2: Convert to fraction form
    279,542/372,439 = 372,439/x
  3. Step 3: Cross multiply
    279,542x = 372,439 × 372,439
  4. Step 4: Simplify right side
    279,542x = 138,710,808,721
  5. Step 5: Solve for x
    x = 138,710,808,721/279,542
  6. Step 6: Final answer
    x = 496,207.40

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.